Improvement in bullets



J. REIN l. STCK.

Bullets.

N0. 1213,419. Patented Oct. 7,1873.

UNITED STATES IPATENT (D-EEIOEo JOHN REIN AND JOHN STOCK, OF NEW YORK,N. Y.

IMPROVEMENT IN BULLETS.

Specification forming part of Letters Patent No. 143,419, dated October7, 1873; application filed May 28, 1873.

To all whom it may concern:

Be it known that we, JOHN REIN and JOHN STOCK, both of the city of NewYork, in the State of New York, have invented a new and Improved Bullet,of which the following` is a specification In the use of the very longprojectile now generally adopted for breech-loading iirearms it is foundthat there is very great friction when the same is constructed in theusual manner, either with annular grooves and straight or taperingsides, or with a hollow base for the explosive gases to expand into theriiied grooves.

Our invention has for its objects to obviate, as far as possible, theabove defect, and to provide a bullet having all of the advantages ofthe best now known, while having the least possible friction. With ourinvention the bore of the gun and the riiied grooves are constantlyscraped out by each successive shot and thereby kept unusually clean;and to this end our invention consists in the construction of the bullethereinafter more fully described.

Figure 1 represents a side view 5 Fig. 2, an end view; Fig. 3, a sectionOf a gun-barrel, showing our bullet placed therein; and Fig. 4, alongitudinal section of the bullet.

In the accompanyingdrawing, which represents a bullet embodying ourinvention, A represents the bullet, and B a part of the metalliccartridge-case. This bullet is made with three rings Or circularprojections. The first ring, a, is arranged close behind the taperingportion of the bullet, and is of the exact diameter as the bore of thegun or ride. The

. two other1 rings, n n, are situatedat the after end of the bullet,with a deep recess or groove, c, between the same, and are a littlelarger in diameter than the bore of the gun. The space m between thering a and middle ring n, is made a little smaller than the bore of thegun. The space m and the recess or groove c are filled with a suitablelubricant. 'lhe ring a, will act as a 'guide for the bullet in itspassage through the gun, while the rings n u will be forced into thespiral channels, and with their sharp edges clean the inside of thebarrel, as well as Of the rifled grooves, while the lubricant in thespace m and in the recess c will grease the same, and thus facilitatethe passage of the bullet. The metallic cartridge-case B is fastened tothe after ring n of the bullet in the usual manner.

We disclaim a tapering bullet provided with circumferential grooves nearits base.

What we claim as our invention, and desire to secure by Letters Patent,is

The within-described bullet, provided with an annular outward projectingring at its front end, of the size of the bore of the gun, and with twoOutward-projecting rings near its rear end, one of which is Of the sizeof the one-half of the depth of the ried groove, and the other of thesize of the full depth of the groove of the gun, as set forth. l

JOHN REIN. JOHN STOCK.

Witnesses:

HENRY E. ROEDER, C. THORNTON.

